23 – 25 Clues Given

Free Expert Sudoku Online — Master Level Challenges

Test your mastery with Expert Sudoku puzzles. Requiring advanced patterns like X-Wing, Y-Wing, and Swordfish.

Medium Sudoku Puzzle
Mistakes: 0
00:00

Expert Sudoku

X-Wing Technique
Y-Wing (XY-Wing)
Box-Line Reduction

Rules:

  • Identify rectangular candidate patterns across parallel rows or columns.
  • Eliminate candidates outside intersecting wings.